The term 'ZIPS' can refer to several different things. NILS is an acronym for 'Numerical Information and Location System', which is a system used by the United States Postal Service to identify and track mail. OOMPHS is an acronym for 'Order of Magnitude Performance and Hardware Scalability', which is a computer system designed to measure the performance of hardware. SPEEDS is an acronym for 'Secure Packet Encryption and Decryption System', which is a system used to encrypt and decrypt data packets. ADDRESSCODES is an acronym for 'Address Coding System', which is a system used to assign unique codes to addresses in order to facilitate mail delivery.